General Science Jkssb Biology Set 1 Mcqs (605 MCQs) | JKSSB & SSC Quiz

General Science

jkssb biology set 1 mcqs

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Practice Questions

605 Total
Question 351 Discuss
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Which cell organelle is responsible for the 'Packaging and Secretion' of materials in the cell

A
Endoplasmic Reticulum
B
Golgi Apparatus
C
Mitochondria
D
Lysosomes

Answer & Explanation

Correct Option: B

Golgi apparatus modifies, sorts, and packages proteins and lipids for secretion or delivery to other organelles.
Question 352 Discuss
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What is the primary role of 'Surfactant' in the human lungs

A
To increase the surface area of alveoli
B
To reduce surface tension and prevent alveolar collapse
C
To transport oxygen into the capillaries
D
To trap dust and bacteria

Answer & Explanation

Correct Option: B

Pulmonary surfactant reduces the work of breathing by preventing small alveoli from collapsing.
Question 353 Discuss
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The 'Ringworm' infection in humans is caused by

A
Virus
B
Bacteria
C
Fungi
D
Nematodes

Answer & Explanation

Correct Option: C

Ringworm is a common fungal skin infection (Dermatophytosis) that causes a red, circular rash.
Question 354 Discuss
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In humans the 'Corpus Luteum' is responsible for the secretion of which hormone

A
LH
B
FSH
C
Progesterone
D
Prolactin

Answer & Explanation

Correct Option: C

After ovulation, the ruptured follicle turns into the corpus luteum, which secretes progesterone to maintain the uterine lining.
Question 355 Discuss
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Which of the following is a primary lymphoid organ in the human body

A
Spleen
B
Tonsils
C
Thymus
D
Lymph nodes

Answer & Explanation

Correct Option: C

Bone marrow and thymus are primary lymphoid organs where lymphocytes are produced and mature.
Question 356 Discuss
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Which plant tissue is primarily responsible for the 'Secondary Growth' or increase in girth

A
Apical Meristem
B
Lateral Meristem
C
Intercalary Meristem
D
Parenchyma

Answer & Explanation

Correct Option: B

Lateral meristems, such as vascular cambium and cork cambium, lead to the thickening of the plant body.
Question 357 Discuss
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The movement of ions across the cell membrane through 'Ion Channels' down their electrochemical gradient is called

A
Active transport
B
Facilitated diffusion
C
Endocytosis
D
Primary active transport

Answer & Explanation

Correct Option: B

Since it uses specific proteins but does not require energy, it is a form of facilitated diffusion.
Question 358 Discuss
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The disease 'Diabetes Insipidus' is caused by the deficiency of which hormone

A
Insulin
B
Glucagon
C
Antidiuretic Hormone
D
Oxytocin

Answer & Explanation

Correct Option: C

Lack of ADH (Vasopressin) leads to the inability of kidneys to conserve water, resulting in excessive thirst and urination.
Question 359 Discuss
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Which among the following is a 'Connecting Link' between reptiles and birds

A
Platypus
B
Archaeopteryx
C
Peripatus
D
Seymouria

Answer & Explanation

Correct Option: B

Archaeopteryx had teeth and a long bony tail (reptilian) as well as feathers and wings (avian).
Question 360 Discuss
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The 'Rhesus Factor' or Rh blood group system was discovered by

A
Karl Landsteiner and Weiner
B
Robert Koch
C
Louis Pasteur
D
William Harvey

Answer & Explanation

Correct Option: A

Discovered in 1940 using the Rhesus monkey, it is a critical antigen system in blood transfusion.
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